Posts Tagged ‘ ggplot2 ’

Evolution average number of beds per hospital

July 27, 2012
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The OECD collects (among a lot of other statistics) information on the number of hospitals and hospital beds per country. These two parameters combined and its evolution over the years could give an indication on whether or not the country’s hospital landscape is evolving towards large medical centers, small scale  Read more »

Estimating required hospital bed capacity

July 23, 2012
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Estimating required hospital bed capacity requires a thorough analysis. There are a lot of ways of approaching a capacity requirement problem, but I think we can agree that a simple spreadsheet analysis just won't cut it. The approach described in this post makes use of discrete-event simulation and, just to  Read...

Using discrete-event simulation to simulate hospital processes

July 12, 2012
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Discrete-event simulation is a very useful tool when it comes to simulating alternative scenario’s for current of future business operations. Let’s take the following case; Patients of an outpatient diabetes clinic are complaining about long waiting times, this seems to have an adverse effect on patient satisfaction and patient retention.  Read more »

Review: Kölner R Meeting 6 July 2012

July 10, 2012
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The second Cologne R user meeting took place last Friday, 6 July 2012, at the Institute of Sociology. Thanks to Bernd Weiß, who provided the meeting room, we didn't have to worry about the infrastructure, like we did at our first gathering. Again, we ...

SMS analysis (coming from an Android smartphone or an IPhone)

July 7, 2012
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At first, this post was intended to describe how to manipulate dates with R but, as the idea was coming from the question of one of my students who wanted to analyze his SMS, I thought that I might as well also explain the whole analysis process... Using my new smartphone (that I started to

Timeline graph with ggplot2

July 7, 2012
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This post shows how to create a timeline graph by using ggplot2. Let’s start by loading the ggplot2 library. Next let’s create a dataset which we will use to feed the graph. In the last column (y), I create random positive values for the first three rows (which will be  Read more...

Euro 2012: Day 18

June 25, 2012
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As promised. Looks like a Spain Germany final.

Experimental Design: Problem Set

June 21, 2012
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QUESTIONSThe tensile strength of Portland cement is being studied. Four different mixing techniques can be used economically. The following data have been collected: MixingTechniques Tensile Strength (lb/in­­2) ...

Euro 2012: End of Group Stage

June 20, 2012
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Time for an update of the plots. Here are the teams still left in the competition. This is the group stratification. Finally, the busy plot.

Notes from A Recent Spatial R Class I Gave

June 19, 2012
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Below is a link to a pdf (compiled with the amazing knitr package) and some accompanying data for a recent short course I gave on basic spatial data import/analysis/visualization in R. The class was only two hours and some of the participants were bein...